Abstract
The purpose of this study was to evaluate the efficacy and toxicity of the postoperative radiotherapy in patients with incompletely resected NSCLC, and to investigate whether the histological subtype is a prognostic factor. Forty-one incompletely resected NSCLC patients who underwent postoperative radiotherapy were retrospectively analyzed. The microscopic residual tumor (R1 group) was recognized in 23 patients, and the macroscopic residual tumor (R2 group) in 18. The postoperative pathological stages were I (n = 3), II (n = 8), IIIA (n = 17), and IIIB (n = 13). The histology included squamous cell carcinoma (n = 23), adenocarcinoma (n = 14) or other types (n = 4). The first site of disease progression was distant metastases alone for 3 (13%) of 23 with squamous cell carcinoma, and for 9 (64%) of 14 with adenocarcinoma (p < 0.01). The 5-year overall, local control, disease-free, and distant metastasis-free survival rates were 56%, 63%, 37% and 49%. Univariate analyses showed that squamous cell carcinoma histology, N0-1 stage and the R1 group were significant predictors for better disease-free and distant metastasis-free survival. Multivariate showed that squamous cell carcinoma and N0-1 stage were significant predictors for bet...Continue Reading
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